Physical reality (all spacetime) began to exist.
This page analyzes six evidences,…
This is relevant because if physical reality began to exist, then no beginningless model is true.
The Aguirre-Gratton reversed arrow-of-time model is true. This is relevant because the model lacks a beginning.
The Carroll-Chen reversed arrow-of-time model is true. [See full article.] This is relevant because the model lacks a beginning.
By way of response: